Subject pre-evaluation on occupational hazardous factors in construction project of lead smelting and comprehensive utilization of resources in a company
WANG Lin;LIU Heng-ping;Hunan Vocational Institute of Safety & Technology;
Objective To identify and analyze the occupational hazards which are possibly generated or existed in construction projects,to determine the hazard category,to predict the extent of workers' health hazards,and to discuss occupational health protection countermeasures and management measures. Methods According to the evaluation norms of occupational hazards in the construction project and preliminary in- vestigation,the qualitative and quantitative assessment for occupational hazards of this project was conducted with the combination of analogy,check list method and empirical method. Results The major occupational hazards in production process were carbon monoxide,lead,arsenic and its inorganic compounds,fluoride,antimony and its compounds,etc. Based on the results of analogical detection and the data of field investigation,concentrations of dust,lead,arsenic and its inorganic compounds and noise intensities exceeded occupational exposure limits. CSTELand CTWAfor dust were 5. 6- 19. 9 mg / m3 and 2. 7- 10. 9 mg / m3,noise intensities were 80. 2- 92. 1d B( A). This project was classified as the project with serious occupational hazards. Conclusion The occupational hazard prevention facilities which to be taken in this construction project are in line with national occupational health standards and hygiene requirements. In occupational health's opinion,the construction project is feasible.